<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>CSS三大特性</title>
		<style>
			div{
				color: red;
			}
		</style>
	</head>
	<body>
		<p>p1</p>
		<div>
			<p>p2</p>
			<span>span1</span>
			<a href="">超链接</a>
		</div>
	</body>
</html>